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I. Basic Information for CVE-2026-34118
Vulnerability Information

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Vulnerability Title
Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
Source: NVD (National Vulnerability Database)
Vulnerability Description
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.  An attacker on the same network segment could trigger heap memory corruption conditions by sending crafted payloads that cause write operations beyond allocated buffer boundaries.  Successful exploitation causes a Denial-of-Service (DoS) condition, causing the device’s process to crash or become unresponsive.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
TP-Link Tapo C520WS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link Tapo C520WS是中国普联(TP-Link)公司的一个WiFi摄像头。 TP-Link Tapo C520WS v2.6版本存在安全漏洞,该漏洞源于HTTP POST主体解析逻辑中缺少动态分配后剩余缓冲区容量的验证,可能导致堆内存损坏,进而引发拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
TP-Link Systems Inc.Tapo C520WS v2.6 0 ~ 1.2.4 Build 260326 Rel.24666n -
II. Public POCs for CVE-2026-34118
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III. Intelligence Information for CVE-2026-34118
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IV. Related Vulnerabilities
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